User Manual · Publication 1783-UM011 · Rockwell Automation

Stratix 2000 Ethernet Unmanaged Switches User Manual

This user manual covers the Allen-Bradley Stratix 2000 Ethernet unmanaged switches, 14 catalog numbers from 1783-US5T to 1783-US16T2S. It explains broadcast storm protection thresholds, DIP switch settings, and status indicators. Models include 5-, 8-, 10-, 16-, and 18-port Fast Ethernet switches and 5- and 10-port Gigabit Ethernet switches.

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14 Catalog Numbers Covered
5 to 18 ports Port Counts
20 pps Broadcast Storm Threshold (Packet-based)
10 Mbps per port Broadcast Storm Threshold (Rate-based)

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Specifications

Broadcast Storm Protection, Packet-based Thresholds

1783-US5T, US4T1F, US4T1H, US8T, US6T2F, US6T2H, US7T1F, US7T1H 20 pps at 10 Mbps per port; 200 pps at 100 Mbps per port
1783-US6T2TG2F, US6T2TG2H, US8TG2GX 128 pps for 10/100/1000 Mbps

Broadcast Storm Protection, Rate-based Thresholds

1783-US16T, US16T2S 10 Mbps per port
1783-US5TG 25 Mbps per port

Status Indicator Blink Rate by Catalog Number

1783-US5T, US4T1F, US4T1H, US8T, US6T2F, US6T2H, US7T1F, US7T1H 105 ms
1783-US5TG 84 ms
1783-US6T2TG2F, US6T2TG2H, US8TG2GX 100 ms
1783-US16T, US16T2S 42 ms

DIP Switch Functions

SW1 (all models), On Enables broadcast storm protection (default: Off)
SW1 (all models), Off Disables broadcast storm protection
SW2 (US6T2TG2F, US6T2TG2H), On Sets SFP fiber port speed to 100 Mbps (100Base-FX); must remain On
SW2 (US5TG), On Transmits jumbo frames up to 10 KB
SW2 (US8TG2GX), On Transmits jumbo frames up to 9.6 KB
SW2 (US5TG, US8TG2GX), Off Drops jumbo frames (default)

Communication Protocols

Supported industrial networks and field buses for the products covered by this publication.

100Base-TX Fast Ethernet RJ45 ports on 5-, 8-, 10-, 16-, and 18-port models 10 Mbps RJ45 Fast Ethernet ports also operate at 10 Mbps 1000Base-TX Gigabit RJ45 ports on US5TG, US6T2TG2F, US6T2TG2H, US8TG2GX 100Base-FX SFP fiber ports on applicable models; default speed on US6T2TG2F and US6T2TG2H 1000Base-X SFP fiber ports at 1000 Mbps on US6T2TG2F, US6T2TG2H, and US8TG2GX

Document Contents

Full PDF covers the following topics in detail:

  • Broadcast Storm Protection
  • DIP Switches
  • Status Indicators
  • Additional Resources

Frequently Asked Questions

How do I enable broadcast storm protection on a Stratix 2000 switch?
Set DIP switch SW1 to the On position on the top panel of the switch, then restart the switch. By default, broadcast storm protection is disabled (SW1 in the Off position).
What broadcast storm threshold does the 1783-US16T use?
The 1783-US16T uses a rate-based threshold of 10 Mbps per port. Once a port reaches this maximum bit rate, excess broadcast packets are dropped.
What is the packet-based broadcast storm threshold for the 1783-US8T?
The 1783-US8T uses 20 packets per second (pps) for 10 Mbps ports and 200 pps for 100 Mbps ports.
What does SW2 do on the 1783-US6T2TG2F and 1783-US6T2TG2H switches?
On these models, SW2 in the On position sets the SFP fiber port speed to 100 Mbps (100Base-FX). The document states SW2 must remain in the On position for these catalog numbers.
What does SW2 do on the 1783-US5TG and 1783-US8TG2GX switches?
On the 1783-US5TG, SW2 in the On position enables jumbo frame transmission up to 10 KB. On the 1783-US8TG2GX, SW2 On enables jumbo frames up to 9.6 KB. In the Off position (default), jumbo frames are dropped.
How can I tell if an RJ45 port is operating at 100 Mbps or 10 Mbps?
The yellow RJ45 port speed indicator shows the operating speed. When the indicator is On, the port is operating at 100 Mbps (100Base-TX). When it is Off, the port is operating at 10 Mbps or has no network connection.
Do DIP switch changes take effect immediately on Stratix 2000 switches?
No. The manual states that to activate DIP switch settings, you must restart the switch after making any changes.

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